2 ARKIV FÖR BOTANIK. BD 9. N:0 14. 



that they belong together as twigs of the same stem. On 

 the fragment to the right no leaves remain attached to the 

 axis, but the impression shows the surface of the stem with 

 the spirally arranged leaf-scars. The impression of the axis 

 measures, when the outer parts are preserved, 10 — 12 mm. in 

 diameter. In the upper part of the fragment to the right, the 

 outer layers of the stem have been removed before the de- 

 position of the fossil. There remains only a sharply defined 

 central axis, 3 — 4 mm. broad, the carbonized remains of which 

 show a marked longitudinal striation. It appears most prob- 

 able, that this centra] part represents the woody part of 

 the stem. On the impression there are seen some small dot- 

 like depressions. It seems probable from this specimen that 

 the outer, less resistant layers of the stem were very thick 

 as compared with the wood. 



The leaf-scars are not very clearly seen. Their spiral 

 arrangement on the shoot is however evident. In the middle 

 part of the fragment to the right the leaf scars are shown 

 as they appear on the surface of the carbonized remains of 

 the stem. The enlarged figures 2 — 5 are drawn from the 

 impressions, as seen after the coal has been removed. The 

 figures give an idea of the variation in shape of the leaf- 

 scars. These are transversely elongated with a horizontal 

 diameter of 3 — 5 mm. In a few cases some small and indis- 

 tinct dots are seen, which probably represent scars of the 

 leaf-traces. Their number and mode of arrangement could 

 not be made out with certainty. They seem, however, to be 

 at least three, but probably more, and arranged horizontally. 



From the shape and size of the leaf-scars, the leaves 

 appear to have been attached to the stem with a compara- 

 tively broad base. On the left fragment a number of leaves 

 are seen still in connection with the stem. They are linear 

 in shape and somewhat tapering towards the base. Only the 

 lower parts are preserved. The largest fragment measures 

 60 mm. in length, without being complete, and is 5 — 7 mm. 

 broad in the upper part. The lamina seems to have been 

 comparatively thick. The veins are parallel, varying in num- 

 ber, 10 — 12 in the broadest fragment. They are best seen 

 on the surface of the carbonaceous remains of the leaf, but 

 even here they are not very distinct. Each vein can be fol- 

 lowed only a short distance, before it disappears, as if split up 





